Commit Graph

11 Commits

Author SHA1 Message Date
peter klausler d56fdc8e95 [flang][msvc] Avoid dependence on long double
MSVC does not support a distinct 80-bit extended precision
"long double" type.  Rework the I/O runtime to avoid using
native C/C++ type names.  Centralize the mappings between
the KIND= type parameters of REAL and their binary precisions
in the common real.h header file, and use KIND type parameter
values rather than binary precisions for clarity where
appropriate.

This patch, if successful, should obviate the need for
Differential review D88511.

(This patch anticipates a successful review of D88688, which
fixes the function that maps each kind of real to its maximum
number of significant decimal digits.)

Differential revision: https://reviews.llvm.org/D88752
2020-10-07 15:12:08 -07:00
peter klausler 567462b48e [flang] Correct kP scaling on F output
The sign of the scaling factor was misinterpreted for output
as meaning what it does for input.  To be correct, they
should cancel each other out.

print '(1P,F4.3)', 1. ! printed 0.1 but should print 10.0

Differential revision: https://reviews.llvm.org/D88610
2020-10-05 13:58:42 -07:00
peter klausler e99d184d54 [flang] Readability improvement in binary->decimal conversion
Tweak binary->decimal conversions to avoid an integer multiplication
in a hot loop to improve readability and get a minor (~5%) speed-up.
Use native integer division by constants for more readability, too,
since current build compilers seem to optimize it correctly now.
Delete the now needless temporary work-around facility in
Common/unsigned-const-division.h.

Differential revision: https://reviews.llvm.org/D88604
2020-10-01 15:49:27 -07:00
peter klausler 4fb679d3b1 [flang] Fix Gw.d format output
The estimation of the decimal exponent needs to allow for all
'd' of the requested significant digits.

Also accept a plus sign on a "+kP" scaling factor in a format.

Differential revision: https://reviews.llvm.org/D88618
2020-09-30 18:02:25 -07:00
peter klausler e79a86e45b [flang] Insert leading blanks in LOGICAL formatted output fields
Summary: For Lw output editing, emit (w-1) blanks before the T or the F.

Reviewed By: sscalpone, PeteSteinfeld

Differential Revision: https://reviews.llvm.org/D84059
2020-07-18 10:44:16 -07:00
Tim Keith dd90408262 [flang][NFC] Get formatting in sync with latest clang-format
flang/module only contains Fortran files and one is a .h so disable
formatting on that directory.

Differential Revision: https://reviews.llvm.org/D82989
2020-07-01 16:51:46 -07:00
peter klausler 0df6f8fe8e [flang] Fix F5.3 formatting of 0.025
Fix F output editing in the Fortran runtime so that it
respects the 'd' count of digits after the decimal mark.

Reviewed By: tskeith

Differential Revision: https://reviews.llvm.org/D82242
2020-06-19 18:09:10 -07:00
peter klausler 6fec2c4402 [flang] Fix x87 binary->decimal
Summary:
Fix decimal formatting of 80-bit x87 values; the calculation ofnearest neighbor values failed to account for the explicitmost significant bit in that format.

Replace MultiplyByRounded with MultiplyBy in binary->decimal conversions,
since rounding won't happen and the name was misleading; then remove
dead code, and migrate LoseLeastSignificantDigit() from one source file
to another where it's still needed.

Reviewers: tskeith, sscalpone, jdoerfert, DavidTruby

Reviewed By: tskeith

Subscribers: llvm-commits, flang-commits

Tags: #flang, #llvm

Differential Revision: https://reviews.llvm.org/D79345
2020-05-04 12:04:08 -07:00
Tim Keith 1f8790050b [flang] Reformat with latest clang-format and .clang-format
Original-commit: flang-compiler/f18@9fe84f45d7
Reviewed-on: https://github.com/flang-compiler/f18/pull/1094
2020-03-28 21:00:16 -07:00
Isuru Fernando 231fae9087 [flang] Need <algorithm> for std::min and std::max (flang-compiler/f18#1063)
Original-commit: flang-compiler/f18@d0f9ef7742
Reviewed-on: https://github.com/flang-compiler/f18/pull/1063
2020-03-12 10:52:29 -07:00
peter klausler 3b63571425 [flang] Use hash table for UnitMap, avoid C++ STL binary dependence
Scan FORMAT strings locally to avoid C++ binary runtime dependence when computing deepest parenthesis nesting

Remove a dependency on ostream from runtime

Remove remaining direct external references from runtime to C++ library binaries

Remove runtime dependences on lib/common

SetPos() and SetRec()

Instantiate templates for input

Begin input; rearrange locking, deal with CLOSE races

View()

Update error message in test to agree with compiler change

First cut at real input

More robust I/O runtime error handling

Debugging of REAL input

Add iostat.{h,cpp}

Rename runtime/numeric-* to runtime/edit-*

Move templates around, templatize integer output editing

Move LOGICAL and CHARACTER output from io-api.cpp to edit-output.cpp

Change pointer argument to reference

More list-directed input

Complex list-directed input

Use enum class Direction rather than bool for templates

Catch up with changes to master

Undo reformatting of Lower code

Use record number instead of subscripts for internal unit

Unformatted sequential backspace

Testing and debugging

Dodge bogus GCC warning

Add <cstddef> for std::size_t to fix CI build

Address review comments

Original-commit: flang-compiler/f18@50406b3496
Reviewed-on: https://github.com/flang-compiler/f18/pull/1053
2020-03-11 13:23:39 -07:00